Red Sea REEFER XL 525 Rimless System 139 Gallon

Red Sea REEFER™ XL Systems
Rimless Reef Ready Systems for advanced hobbyists

Red Sea REEFER™ XL Concept

The new REEFER™ XL 425 enables you to create substantial aquascaping while still providing plenty of water volume and space for your aquarium inhabitants. Both also feature proportionately larger sumps with an extra 3cm / 1.2″ water height in the skimmer chamber.

Red Sea’s REEFER™ series of Reef Systems provide advanced hobbyists with a solid foundation for building a fully featured reef or marine aquarium.

The REEFER™ series combines a contemporary, rimless, ultra-clear glass aquarium with a stylish cabinet and a comprehensive water management system including a professional sump with integrated automatic top-up and Red Sea’s unique silent down-flow system.

Incorporating technologies originally developed for Red Sea’s all-in-one MAX® coral reef systems, the REEFER™ series is designed for ease of operation while enabling the advanced hobbyist to install an unlimited choice of lighting, filtration, circulation and controllers to create a uniquely customized system.

Red Sea REEFER™ XL Features: 
  • Rimless, ultra-clear, beveled edge glass aquarium

  • Elegant Marine-Spec cabinet

  • Professional sump with constant height skimmer chamber and micron filter bags

  • Silent, regulated down-flow system with emergency overflow

  • Integrated automatic top-up system with reservoir

  • Assembly-ready piping – no gluing required

REEFER™ XL Specification

REEFER™ aquariums are constructed from thick, beveled-edge, ultra-clear glass to support their elegant and modern rimless design.

red sea reefer 350 marine aquarium system

The aquarium sits on a recessed base that “floats” it above the cabinet, which seamlessly follows the contour of the glass.

Red Rea reefer marine aquarium system

The marine-spec laminated cabinet that houses the sump and vented space for chillers, is smartly finished with weatherproof, epoxy-painted doors. Offered with black or white exteriors, all cabinets have a black interior which maintains its clean appearance over time.

REEFER™ Water Management System

Red Sea REEFER marine aquarium system - Water managment system - regulated downflow system

Removable surface-skimming combs surround the top of the centrally located overflow box that houses the downpipe, sump return pipe and the discreet multi-directional “eyeball” return outlet nozzle.

Red Sea REEFER marine aquarium system surface skimmimg combs

In the event of a blockage in the regulated downpipe, an additional emergency overflow pipe provides an unrestricted free flow of aquarium water directly to the sump.

On entering the sump the water passes through a 225 micron mechanical filter bagbefore entering the filtration compartment that maintains a constant water height, making it suitable for all skimmers and other reactors.

 Red Sea Reefer marine aquarium system - filtration system

In order to remove any air bubbles that may have escaped from the skimmer, the water passes through a bubble-stripping cascade on its way to the return pump chamber.

To ensure a constant water level in the pump compartment, all REEFER™ sumps include an integrated automatic freshwater top-up unit,  guaranteeing a constant, stable water flow throughout the complete system.

Supplied as a complete self-assembly kit, all pipe work is ready without the need for any gluing.

Red Sea Reefer marine aquarium system - integrated automatic freshwater top-up unit


REEFER™ XL Series Technical Data

REEFER™ XL Model
Specification 425 525
Main Features Ultra clear front and side glass ✔ ✔
Ultra clear front glass thickness (mm) 12 (1/2”) 15 (5/8”)
Built in surface skimmer ✔ ✔
Integrated automatic top up system ✔ ✔
System Volumes Display tank water volume (L) 332 (88 gal) 409 (L108 gal)
In cabinet sump water volume (L) 90 (24 gal) 116 (31 gal)
Total system water volume (L) 422 (112 gal) 525 (139 gal)
RO reservoir volume (L) 12 (3.2 gal) 16.5 (4.3 gal)
System Dimensions Display tank length (cm) 120 (47″) 150 (59″)
Display tank height (cm) 55 (22″) 55 (22″)
Display tank width (cm) 57.5 (22.6″) 57.5 (22.6″)
Total system height with cabinet (cm) 142 (56″) 142 (56″)
Sump Dimensions Water height (cm) 27 (10.6”) 27 (10.6”)
Skimmer chamber (cm) 49 x 34 (19.3”x13.4”) 49 x 48 (19.3”x19.3”)
Pump chamber (cm) 49 x 15 (19.3”x6”) 49 x 15 (19.3”x6”)
Return Pump 3/4” threaded hose barb – Pipe Int. Dia 25mm (1”) 25mm (1”)
Recommended flow (lph)
(pump not included)
4000 (1060 gph) 4000 (1060 gph)

**This product is protected under Community Design 003003474, US Serial No 29/555,022 and Chinese Design Application. No. 201630060633.1**

Red Sea REEFER Marine Aquarium Systems

Lead time for delivery approx. 1 month.





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